1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12caac1365f78103e17308a47fce33c34b4614b52c5c74a4a4654a4ad34b0722. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d405162a-b989-4783-b1b5-a2e7fc8b5e37.json and https://artists.proofprofile.net/proofs/artist/d405162a-b989-4783-b1b5-a2e7fc8b5e37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1105f5f96fa0a400fe7447af61695cddadcfda6d73cb0925783193d0533e7cc. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2006402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36683413c82cd43624bc6d5f1805f0162668a1fae0a896045f92d1e42303f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2006405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a680edfcbf73c408ea7498a54929bf3ecc836eff76d76a6e24f2954a6322c0f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2006410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174a2b0d540c3418fdf5e7ebe04c515832d6f79b958c10a25631611686156776. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2006414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838aed08826e215572ed94b0f0110fcb893d090eb20534daf70258cf98cfa29. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2006416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6155bae3ed2d8cb0e852c5c030af6f2aac90c9ca5ac0e9f00ef5c2dae659a41. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2110694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cbca56e4d54c17d26c4f6855d3c166ea2b9138210212cc06a3a2f79632326b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2116852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efdcea6a688b16eda4b26f3deb58aa075ef4f8dc200e815dc51e8a17bb9d696. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:36:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2120097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea218fdf81d45466c0edb1efe1ab74b69e1f9f3d6bd74eac050b1a78d2f54652. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2120100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa6522936c9d7affdc4c6cce7f20899ebee68f1c89ad1790e36ad9e9b620f03. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2129115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09acef5c00d3805ee2591257b38b614f70a318e543f2006e3c3e95506f973dcc. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:42:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2129121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e842c2a1aeaf5f24e8b70032624867e078df624273aa9bc3d07015015a3b0c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2129124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5744c0292933c9d2692be39032ad881f30853fed247bfc73d626df725e058fa6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2136860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c34875940e143a771dc8c46034c60a8e51945411b4457d310afbafa07b6dd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:30:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2136872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f110639296ab9af86a98af666062618ebb4878162ce4df9c192d42540260716. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:01:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2329400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea739f14d66138c77d2d43ac8bd071738bbebb0a91cf23421142cf50acc9e8d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLT2329412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe68ccfd6838192034d5558f6706d5f57bafe684585d1731221858b7dad7fbc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:03:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBD2485505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2dbf22bdc9f870ec18cdfbcaadc82a814e17f5a50decc138b7d97304723c91. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBD2485508.